as sidster said they are for daytraders...overall the holding period for chinese stocks is 1 day or 2-3 days max when the markets are up
buy when the RSI is below 25 (gotta push the notch even lower for chinese stocks on the RSI) ...if you are holding it long term ...then yeah you're pretty much screwed...cuz BIDU's come few and far between specially from china ...even china's facebook RENN failed miserably ....the stocks u mentioned above ...if ure trying to sell, sell when the markets are up MACDs are turning on both ...but thats just my opinion ....
gluck